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# Plugin for the Ruby IRC bot (http://linuxbrit.co.uk/rbot/)
#
# Create mini plugins on IRC.
#
# Commands are little Ruby programs that run in the context of the command plugin. You
# can create them directly in an IRC channel, and invoke them just like normal rbot plugins.
#
# (c) 2006 Mark Kretschmann <markey@web.de>
# Licensed under GPL V2.
Command = Struct.new( "Command", :code, :nick, :created, :channel )
class CommandPlugin < Plugin
def initialize
super
if @registry.has_key?(:commands)
@commands = @registry[:commands]
else
@commands = Hash.new
end
# Migrate old Hash to new:
@commands.each_pair do |name, cmd|
unless cmd.instance_of?( Command )
@commands[name] = Command.new( cmd, 'unknown hacker', 'somedate', '#somechan' )
end
end
end
def save
@registry[:commands] = @commands
end
def help( plugin, topic="" )
if topic == "add"
"Commands are little Ruby programs that run in the context of the command plugin. You can access @bot (class IrcBot), m (class PrivMessage), user (class String, either the first argument, or if missing the sourcenick), and args (class Array, an array of arguments). Example: 'command add greet m.reply( 'Hello ' + user )'. Invoke the command just like a plugin: '<botnick>: greet'."
else
"Create mini plugins on IRC. 'command add <name> <code>' => Create command named <name> with the code <source>. 'command list' => Show a list of all known commands. 'command show <name>' => Show the source code for <name>. 'command del <name>' => Delete command <name>."
end
end
def listen( m )
name = m.message.split.first
if m.address? and @commands.has_key?( name )
code = @commands[name].code.dup.untaint
# Convenience variables, can be accessed by commands:
args = m.message.split
args.delete_at( 0 )
user = args.empty? ? m.sourcenick : args.first
Thread.start {
$SAFE = 3
begin
eval( code )
rescue => e
m.reply( "Command '#{name}' crapped out :(" )
m.reply( e.inspect )
end
}
end
end
def handle_add( m, params, force = false )
name = params[:name]
if !force and @commands.has_key?( name )
m.reply( "#{m.sourcenick}: #{name} already exists. Use 'add -f' if you really want to overwrite it." )
return
end
code = params[:code].join( " " )
nick = m.sourcenick
created = Time.new.strftime '%Y/%m/%d %H:%m'
channel = m.target
command = Command.new( code, nick, created, channel )
@commands[name] = command
m.reply( "done" )
end
def handle_add_force( m, params )
handle_add( m, params, true )
end
def handle_del( m, params )
name = params[:name]
unless @commands.has_key?( name )
m.reply( "Command does not exist." ); return
end
@commands.delete( name )
m.reply( "done" )
end
def handle_list( m, params )
if @commands.length == 0
m.reply( "No commands available." ); return
end
cmds_per_page = 30
cmds = @commands.keys.sort
num_pages = cmds.length / cmds_per_page
page = params[:page].to_i
page = [page, 1].max
page = [page, num_pages].min
str = cmds[(page-1)*cmds_per_page, cmds_per_page].join(', ')
m.reply "Available commands (page #{page}/#{num_pages}): #{str}"
end
def handle_show( m, params )
name = params[:name]
unless @commands.has_key?( name )
m.reply( "Command does not exist." ); return
end
cmd = @commands[name]
m.reply( "#{cmd.code} [#{cmd.nick}, #{cmd.created} in #{cmd.channel}]" )
end
end
plugin = CommandPlugin.new
plugin.register( "command" )
plugin.map 'command add -f :name *code', :action => 'handle_add_force', :auth => 'commandedit'
plugin.map 'command add :name *code', :action => 'handle_add', :auth => 'commandedit'
plugin.map 'command del :name', :action => 'handle_del', :auth => 'commandedit'
plugin.map 'command list :page', :action => 'handle_list', :defaults => { :page => '1' }
plugin.map 'command show :name', :action => 'handle_show'
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